发明名称 |
Process for preparing stilbenedicarbonitriles |
摘要 |
A process for preparing stilbenedicarbonitrile by dimerizing o- or p-cyanobenzyl chloride in a polar aprotic solvent in the presence of an excess of alkali metal hydroxide powder. Stilbenedicarbonitriles are precursors for the preparation of fluorescent brighteners of the bisbenzoxazolylstilbene class.
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申请公布号 |
US4519953(A) |
申请公布日期 |
1985.05.28 |
申请号 |
US19840594547 |
申请日期 |
1984.03.29 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
HEISS, LORENZ |
分类号 |
C07C255/50;C07C255/51;(IPC1-7):C07C121/64 |
主分类号 |
C07C255/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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